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Showing content with the highest reputation on 09/14/18 in all areas

  1. I really wish you hadn't posted a link to that rag Here is a report from a slightly more reputable news source: http://www.bbc.com/autos/story/20161010-driving-the-saltwater-sports-car And: https://www.theskepticsguide.org/salt-water-car-not-so-fast Here is the Wikipedia age on the technology https://en.wikipedia.org/wiki/NanoFlowcell Sounds rather implausible (and the "saltwater" claim of the Daily Scum is just stupid).
    2 points
  2. Live cam, I live closest to Wrightsville Beach...
    2 points
  3. Gees has regularly shared here that they have MS and sometimes get deeply tired upon composing posts, especially long ones (which are fairly common for Gees). It’s not uncommon for Gees to go a few days before responding. It can be frustrating to others and interrupt the usual flow of discussions, but is also understandable. Carry on...
    2 points
  4. Do gravitational force and escape velocity have a direct and constant relationship, specifically is the gravitational force at the schwarzild radius the same for any body? If so what is it?
    1 point
  5. I'll try an analogy as a complement to "swimming upstream": I think one could imagine it as an ant that walks along a rubber band while someone slowly stretches the rubber band. Now lets start with several ants equally spaced along the rubber band. The ants represent photons leaving the surface of last scattering and one end of the rubber band is us on earth. All ants start walking, so there will be that ants arriving one at a time. They started from a distance further away as time passes and they have to walk a longer and longer distance to get to the end. The analogy I'm trying to make is that the ants/photons don't start at the same point on the rubber band but they start at the same time. The sphere @Strange describes grows because the photons that started inside the sphere has already arrived here, and photons arriving in the future started from a greater distance. (Getting late here, not sure if I make any sense...)
    1 point
  6. Reminds me of the case in Italy in which six Italian scientists (and a public official) were convicted for manslaughter because they did not accurately predicted the risk of a major earthquake resulting in over 300 victims. Realistically, there are almost always folks staying behind in potential danger zones (sometimes by choice, sometimes not). Thus, erring on the higher risk side is often much better for public safety. Imagine if the news guy says, well, it is wet but not that bad, and folks start drowning because they were in a higher risk zone without realizing it...
    1 point
  7. Escape velocity is given by [math]v_e = \sqrt{\frac{2GM}{r}}[/math] (https://en.wikipedia.org/wiki/Escape_velocity) Where M is the mass of the planet (or whatever) and r is its radius. If you substitute the Schwarzschild radius ([math]r_s = \frac{2 G M}{c^2}[/math]) for r then you will find the result comes to c. (https://en.wikipedia.org/wiki/Schwarzschild_radius) The equation for gravitational force is given by [math]F = G \frac{m M}{r^2}[/math]. As you can see, this decreases with r2 rather than square root of r for escape velocity. It also depends on the mass (m) of the object. (https://en.wikipedia.org/wiki/Newton's_law_of_universal_gravitation) So escape velocity and gravitational force are related but not in a direct way. The acceleration due to gravity (g) is independent of the mass of the object (because acceleration is force/mass): [math]g = G \frac{M}{r^2}[/math] If we substitute this into the equation for escape velocity, we end up with: [math]g = \frac{{v_e}^2}{2 r}[/math] p.s. I wouldn't be too surprised if someone comes along and points out that I have made a mistake there somewhere...
    1 point
  8. Not really. Depends on their objective. If they wish to drive viewership and ratings then they're winning. If they wish to inform people on current status then they're winning. If they wish to educate people on how hurricanes work then they're winning. If they wish to maximize chances at saving life and personal safety then they're winning. If they wish to be 100% accurate weather forecasters and prognosticators? Well, then there's surely always room for improvement, but calling it a disaster for media broadcasting is more than hyperbolic, it's dumb.
    1 point
  9. Does that mean the title is wrong as well? Dark matter is not responsible for accelerating expansion. I can see a couple of problems with this idea. The first is that we have evidence that dark matter existed before stars (patterns in the CMB and large structure formation). https://medium.com/starts-with-a-bang/five-reasons-we-think-dark-matter-exists-a122bd606ba8 Secondly, While we cannot do this, we can look at all the reactions that happen in a star. We have never seen any sign of a mass deficit that could be explained by dark matter. So, we have no evidence for your idea and at least two lines of evidence against it (patterns in the CMB and large structure formation).
    1 point
  10. Seeing as how unicorns date back to the Bronze Age, I don't think I'll have many problems. They may have had a causal effect on Christianity, predating it by a millenium.
    1 point
  11. They do not identify base pair sequencing... I suppose you mean "sequences"? Based on your knowledge, what is the purpose of sequencing for bacterial ID in the first place, what is the traditional approach and what are the differences in NGS?
    1 point
  12. Think of a dimension as a sphere shape, this universe is a dimension that has a wall, there is another dimension much bigger than this one and some asteroids exist there some elements can produce worm holes and an element that produces gravity also exists there. One day the gravity element from an asteroid reached an asteroid that contained the element that produces worm holes and they collided, from this collision there was a reaction, the worm hole element produced particles with soul material that knitted together producing a living being with some gravity element inside his soul. This being then died in the vacuum, there are no stars there just asteroids and so this being found himself in soul form floating in zero gravity surrounded by asteroids and emptiness. He found through investigation that he could influence the worm hole element and produce worm holes, wormholes with particles of different elements and to combine a worm hole entry and exit point together which produces a dimension. Floating in zero gravity this man found a way to build gadgets and found a way to survive by producing an element called mana which is food for the soul. He created a dimension and filled it with a fuel and placed a worm hole inside to pull the fuel into the centre of a star which then reacted to a catalyst and burned in the upper atmosphere of the star. So he used worm hole element to build a star, the star also has a gravity field which comes in handy later. The planet Heaven(his house) was filled with gravity element then stone(worm hole particles clustered together of those elements) and then soil, then an atmosphere was produced by combining twin gravity fields encasing an oxygen filled space. By fiddling with wormholes and gravity he found a way to refill is soul with a body similar to how it had been created in the first place and then later made chambers which did the same and that is how batches of Angels were created and later Humans. The first batch were all male and there were 5000 created. Sometime later this man built a larger dimension and created using tools and gadgets planets and stars and galaxies and this man is Our Lord God. He also created all life but not all at once and not in seven days, this took 3 Trillion Years to accomplish. I am the Arkangel Daniel and I am a scientist Angel from Heaven and I can explain more. So the worm hole element influenced by Gravity and other forces/fields can produce particles as elements or compounds and light. The planet was too hot(they kept dying of Heat stroke) so water was added to cool the surface but it turned to steam and produced clouds now a hot surface 45 degrees C became colder -4 degrees and the environment became like Ireland during winter.
    -1 points
  13. We have only moved away a negligible distance from the source of the radiation. It is the radiation front that has moved away very far from us - not its source.
    -1 points
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